Revert "MM-55295: Improve DB performance of some APIs (#25318)" (#25852)

This reverts commit ec88ab4ee9.

server/channels/store/timerlayer/timerlayer.go

@@ -917,10 +917,10 @@ func (s *TimerLayerChannelStore) GetAll(teamID string) ([]*model.Channel, error)
 	return result, err
 }
 
-func (s *TimerLayerChannelStore) GetAllChannelMemberIdsByChannelId(id string) ([]string, error) {
+func (s *TimerLayerChannelStore) GetAllChannelMembersById(id string) ([]string, error) {
 	start := time.Now()
 
-	result, err := s.ChannelStore.GetAllChannelMemberIdsByChannelId(id)
+	result, err := s.ChannelStore.GetAllChannelMembersById(id)
 
 	elapsed := float64(time.Since(start)) / float64(time.Second)
 	if s.Root.Metrics != nil {
@@ -928,7 +928,7 @@ func (s *TimerLayerChannelStore) GetAllChannelMemberIdsByChannelId(id string) ([
 		if err == nil {
 			success = "true"
 		}
-		s.Root.Metrics.ObserveStoreMethodDuration("ChannelStore.GetAllChannelMemberIdsByChannelId", success, elapsed)
+		s.Root.Metrics.ObserveStoreMethodDuration("ChannelStore.GetAllChannelMembersById", success, elapsed)
 	}
 	return result, err
 }
@@ -1461,22 +1461,6 @@ func (s *TimerLayerChannelStore) GetMemberForPost(postID string, userID string)
 	return result, err
 }
 
-func (s *TimerLayerChannelStore) GetMemberOnly(ctx context.Context, channelID string, userID string) (*model.ChannelMember, error) {
-	start := time.Now()
-
-	result, err := s.ChannelStore.GetMemberOnly(ctx, channelID, userID)
-
-	elapsed := float64(time.Since(start)) / float64(time.Second)
-	if s.Root.Metrics != nil {
-		success := "false"
-		if err == nil {
-			success = "true"
-		}
-		s.Root.Metrics.ObserveStoreMethodDuration("ChannelStore.GetMemberOnly", success, elapsed)
-	}
-	return result, err
-}
-
 func (s *TimerLayerChannelStore) GetMembers(channelID string, offset int, limit int) (model.ChannelMembers, error) {
 	start := time.Now()